Manufacturing is where generic ERP most often fails, and the reason is simple: trading and retail systems track things moving in and out. Manufacturing tracks things being transformed, and transformation needs a completely different model underneath.
The three things that make manufacturing different
1. Bills of materials
A finished product is made from components, each with a quantity. Some of those components are themselves made from other components, which means the bill has levels.
Any serious manufacturing system must handle multi level bills, alternate materials when the primary is unavailable, and versioning, because the recipe changes and last month’s production used last month’s version.
Systems that only support a single flat list of ingredients will work for simple assembly and break for anything with sub assemblies.
2. Work orders and work in progress
Between raw material and finished goods there is inventory that is neither: partially processed material sitting at a stage. If the system cannot represent work in progress, your stock valuation is wrong every day of the month except the days when nothing is in production.
A work order should consume materials at issue, record output at each stage, and carry the accumulated cost forward.
3. Production costing
The number the business actually needs: what did one unit cost to make, including materials, labour, machine time, and a share of overhead.
Without it, pricing is guesswork and nobody knows which products are profitable. With it, most manufacturers discover that at least one product line has been sold below cost for years.
The three things Pakistani manufacturers underestimate
Wastage and yield
Almost no process produces exactly what the bill of materials predicts. Fabric has cutting waste, food processing has moisture loss, chemicals have evaporation, metal has offcuts.
The system needs a standard yield per product and the ability to record actual output against it. The variance report is one of the most valuable in the whole system, because a yield that drifts is either a process problem or a leakage problem and both cost money quietly.
Systems that assume perfect conversion produce inventory numbers that diverge from reality within weeks, and staff stop trusting them.
Multiple units of measure
Buy yarn by the kilogram, issue by the cone, produce by the metre, sell by the piece. Fabric by the roll and by the metre. Chemicals by the drum and by the litre.
The system must hold conversions and apply them consistently in purchasing, issue, production and sales. Where this is missing, staff create duplicate items for each unit, which destroys reporting permanently.
Subcontracting
Very common in Pakistani manufacturing, particularly textiles: material is sent out for dyeing, printing, stitching or plating, and comes back transformed.
That material is still your stock while it is at the vendor. The system needs to track material issued to a subcontractor, what came back, what was lost, and what the process charge was. Generic ERPs frequently have no concept of this, and the workaround is a spreadsheet that becomes the real record.
What else has to be there
- Batch and lot tracking for food, pharmaceutical and chemical manufacturing, with traceability from raw material batch to finished goods batch.
- Quality checkpoints at receiving and at production stages, with a defined path for rejected material.
- Machine and shift capture, if you need to cost machine time or measure downtime.
- Landed cost on imports, distributing duty, freight and clearing across a consignment. Without it, imported material cost is understated and margins are fiction.
- Sales tax and FBR digital invoicing in the formats your business requires.
What to leave out of phase one
Manufacturing ERP projects fail more often from scope than from software. A phase one that tries to include production planning, maintenance management, quality management and business intelligence will not finish.
The sequence that works: inventory and purchasing first, then production and costing, then planning and scheduling. Each phase is usable on its own, and the business learns the system on the simpler half.
Our note on what an ERP really costs covers the wider budgeting picture, and migrating without stopping the business covers the cutover.
Evaluation checklist
- Build a two level bill of materials with an alternate material and produce it.
- Issue material to a work order, record partial output, and show work in progress valuation.
- Show actual yield against standard for last month, by product.
- Purchase in kilograms, issue in a different unit, and show the conversion applied consistently.
- Send material to a subcontractor, receive it back with a loss, and show the stock position throughout.
- Show the costed sheet for one finished unit including overhead.
- Show landed cost for an imported consignment with duty and freight distributed.
Points three and five are where most products fail, and both are skipped in standard demos.
Frequently asked questions
Can we use a trading ERP for manufacturing?
Only for simple assembly with no work in progress and no subcontracting. Anything with transformation stages needs a manufacturing module, and retrofitting one later is close to a reimplementation.
How long does manufacturing ERP implementation take?
Four to eight months for a single site doing inventory, purchasing, production and costing. Longer for multi site or heavy subcontracting. Data cleanup is the largest variable.
Should we build custom or buy?
Buy and configure unless your process is genuinely unusual. Custom is justified for manufacturers whose competitive advantage is in the process itself, or where subcontracting and costing models do not match any available product.
What is the most common cause of failure?
Dirty item master data and an over ambitious phase one. Both are predictable and both are avoidable by choosing scope deliberately.
Ezitech builds and implements ERP for manufacturing, textiles, distribution and retail. See our ERP work or tell us what you produce.